CN209086223U - A kind of indoor air quality monitoring system based on LoRa technology - Google Patents
A kind of indoor air quality monitoring system based on LoRa technology Download PDFInfo
- Publication number
- CN209086223U CN209086223U CN201821623076.XU CN201821623076U CN209086223U CN 209086223 U CN209086223 U CN 209086223U CN 201821623076 U CN201821623076 U CN 201821623076U CN 209086223 U CN209086223 U CN 209086223U
- Authority
- CN
- China
- Prior art keywords
- lora
- air quality
- sensor
- wireless communication
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model discloses a kind of indoor air quality monitoring systems based on LoRa technology, including air quality to acquire sensor, it is characterised in that: further includes LoRa unit, cloud platform, monitoring terminal；In LoRa unit, the LoRa unit is connected the air quality acquisition sensor integration with cloud platform, monitoring terminal；The LoRa unit includes the LoRa node and LoRa gateway interconnected, and the signal of air quality acquisition sensor acquisition is sent to cloud platform, monitoring terminal.Air quality can be monitored in real time in the utility model, and monitoring data are stored when network is bad, and network is sent when good, and reception and transmission range farther out, cuts strong antijamming capability, has very high economic benefit.
Description
Technical field
The utility model relates to field of communication technology technical field more particularly to a kind of room airs based on LoRa technology
Mass monitoring system.
Background technique
In recent years, air quality problems are increasingly severe, concern of the people for air pollutants such as PM2.5, formaldehyde
Also it is gradually promoted.The most of the time in all one's life of people is spent indoors, and indoor air quality has to pass human health status
Important influence, it is necessary to which indoor air quality is monitored.However, when signal weaker area, or monitoring area distance prison
Measured center farther out when, usually can or interference bad because of network quality it is excessive and cause data that cannot transmit in time, the bit error rate it is high,
Cause monitoring more difficult.
The appearance of LoRa (Long Range) technology, this problem of very good solution are a kind of super based on wide frequency
Remote wireless transmission technology, feature are remote, low-power consumption, low rate.It is usually used in that low-power consumption is needed to transmit at a distance, but number
According to the little application of amount.
In the prior art, the AHMT spectrophotometric examined mostly using the gas chromatography of carbon dioxide, formaldehyde
Method, the weight method that PM2.5 is examined, the gas chromatography of total volatile organism (TVOC) detection.However have the disadvantage in that institute
Need equipment expensive, huge；Testing procedure is complicated, it is high to require tester；Test is time-consuming, can not real-time monitoring.
Meanwhile in the conventional technology, it is also often used hand-held air detection instrument, uses electrochemistry, optics, semiconductor alloy
Sensor made of the technologies such as oxide detects the relevant various parameters of air quality, overcomes lacking for traditional test mode
Point, but it still has the disadvantage in that the parameter of 1. monitorings is single, can not cover all key parameters；2. without network savvy, prison
Measured data can only be viewed locally；3. there is networking detector in part, data upload multi-pass and cross wifi or bluetooth, and there are transmission distances
From short, the problem of vulnerable to interference；4. the data detected, saved without local, Network status is bad to be will lead to when can not upload
Loss of data；5. the purposes of detection data is single, it is used only for judging air quality at that time.
In order to overcome above-mentioned segmental defect, those skilled in the art have used a kind of based on LoRa technology by research and development
Urban air-quality real-time monitoring system, application number: 201711049548.5, it discloses client to cloud server send out
It send parameter configuration or receives the air quality information that cloud server is sent.Cloud server receives the ginseng that client issues
Number configuration information simultaneously sends or receives the air quality information of gateway node sending to gateway node and sends to client；Gateway
Node receives the parameter configuration that cloud server issues and sends or receives the air that terminal node issues to terminal node
Quality information is simultaneously sent to cloud server.Terminal node acquires air quality information and to gateway node.Although the existing skill
LoRa technology is utilized in art, so that online air quality monitoring is possibly realized, but the end node devices of the system have
Standby three kinds of states: 1) working condition；2) wake-up states；3) dormant state.Under working condition, terminal MCU control unit, number of terminals
According to acquisition unit, terminal data transmission unit and terminal supplying power unit all in accordance with the program work of setting；Terminal under wake-up states
MCU control unit is in low-power consumption mode, and terminal data acquisition unit stops working, only stay terminal data transmission unit be in
Command mode is received, for receiving the wake-up code and parameter configuration that gateway node under initial power-up sends over, terminal section
Point initially enters working condition according to the parameter of configuration；Terminal MCU control unit is in low-power consumption mode, terminal under dormant state
Data acquisition unit stops working, and terminal data transmission unit stops working, and equipment is automatically into not after measuring each time
Dormancy state, equipment power dissipation is preferably minimized, the wake-up to be interrupted such as terminal MCU control unit, hence into wake-up states.Thus may be used
See, which has suspend mode, cannot continuously be monitored to air quality, can only be in some scheduled time
Section turn on sensor, to start to monitor.And, it measures sensor used in air quality parameters and largely needs two or three point
The preheating time of clock will could export valid data by preheating from the sensor after dormancy awakening, therefore it is not suitable for reality
When monitor air quality.
Therefore, researching and developing one kind can be monitored in real time air quality, and monitoring data are stored when network is bad, and network is sent out when good
It send, farther out, strong antijamming capability, while Sensor section is often powered, the monitoring system that can be monitored in real time is this to reception and transmission range
Field technical staff's urgent problem to be solved.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of indoor air quality monitoring system based on LoRa technology
System.
A kind of indoor air quality monitoring system based on LoRa technology provided by the utility model, including air quality are adopted
Collect sensor, further includes LoRa unit, cloud platform, monitoring terminal, wherein cloud platform, monitoring terminal are received empty by LoRa unit
Makings amount acquisition sensor acquisition data simultaneously be shown to tester, while human observer can by terminal to node, gateway into
Row serial ports parameter configuration (information such as channel, ID)；The air quality acquisition sensor integration is in LoRa unit, the LoRa
Unit is connected with cloud platform, monitoring terminal；The LoRa unit includes the LoRa node and LoRa gateway interconnected, will be empty
The signal of makings amount acquisition sensor acquisition is sent to cloud platform, monitoring terminal；Wherein:
LoRa node includes microprocessor, A/D converting unit, the first LoRa wireless communication module, memory module, air matter
Amount acquisition sensor, the microprocessor are connected with A/D converting unit, LoRa wireless communication module, memory module, are storing
The information such as channel, the ID of node are stored in module；The air quality acquisition sensor is connected with A/D converting unit；It is described
A/D converting unit is converted into the analog signal of air quality acquisition sensor acquisition to be transferred to micro- place after corresponding digital signal
Device is managed, the digital signal that microprocessor is transmitted according to A/D converting unit generates corresponding air quality information and is stored in storage mould
In block, and air quality information is sent to LoRa gateway by the first LoRa wireless communication module；LoRa node and air matter
Amount acquisition sensor is set to region to be monitored jointly.
LoRa gateway includes microcontroller, the 2nd LoRa wireless communication module, the second wireless module, ethernet communication mould
Block；The microcontroller is connected with the 2nd LoRa wireless communication module, the second wireless module, ethernet communication module；Second
LoRa wireless communication module and the first LoRa wireless communication module communication connection receive the air mass signal of its transmission and transmission
To microcontroller, microcontroller by the second wireless module is sent to cloud platform after handling air mass signal, passes through ether
Net module is sent to monitoring terminal.Herein, the microcontroller is arm processor, and model is preferably AM3352.
Preferably, the LoRa node includes microprocessor, A/D converting unit, the first LoRa wireless communication module, deposits
Store up module, air quality acquires sensor, the first wireless module；Wherein:
A/D converting unit passes after the analog signal of air quality acquisition sensor acquisition is converted into corresponding digital signal
It is defeated by microprocessor；A/D converting unit specific structure principle can refer to the prior art.
Air quality data is carried out fusion treatment and forwarding by microprocessor, realizes parsing, the forwarding of access protocol, scheduling
And other resources are distributed, and with functions such as the network protocol stacks on basis；Preferred herein, the microprocessor is
MCU, model STM32F103RCT6.
Air quality information is sent to LoRa gateway by the first LoRa wireless communication module；
The data such as various network protocol stacks are stored in memory module, there are also the information such as the channel of memory node, ID, ID letters
Breath is for carrying out uniqueness label to node；For node when network is bad, storage acquisition data wait network in memory module
LoRa gateway is given in covering data when good；Preferred herein, memory module FLASH, model is preferably GD25Q64C.
First wireless module is one of 3G/4G/GPRS, with cloud platform communication connection.Wherein 3G module model is excellent
It is selected as EM560,4G module model is preferably USR-G402tf-mPCle, and GPRS module model is preferably AIR200；It is wireless simultaneously
Model EC20-CE-Mini PCIe also can be used in module, and 3G/4G/GPRS is integrated in a chip.It needs herein
It is bright, the above only preferred model of the application, naturally it is also possible to use other models, herein with no restriction.
Further embodiment is that the first LoRa wireless communication module includes LoRa wireless communication chips, power amplification
Device PA, low-noise amplifier LNA, change-over switch, antenna；The LoRa wireless communication chips and power amplifier PA, low noise
Amplifier LNA is connected, and the power amplifier PA, low-noise amplifier LNA are connected with change-over switch, the change-over switch and day
Line is connected.When sending signal, power amplifier PA is connected to by changer with antenna, and LoRa wireless communication chips believe data
Number by the way that in coded modulation to the frequency of setting, power amplifier PA amplifies signal, it is subsequently transmitted to antenna, antenna is by telecommunications
Number electromagnetic wave signal is converted to, and by this signal radiation into transmission medium, is sent to LoRa gateway, needs to illustrate herein
It is that the process of coding is specifically that forward error correction coding technology is used to be encoded.When receiving signal, change-over switch is by low noise
Acoustic amplifier LNA is connected to switch, and the wireless signal in transmission medium is converted to electric signal, low-noise amplifier by LoRa gateway
LNA carries out bandpass filtering to it after amplifying electric signal, is subsequently communicated to be demodulated in LoRa wireless communication chips, after demodulation
Data be transferred to microprocessor.Preferred herein, the model of power amplifier PA is preferably BLT53A；Low-noise amplifier
The model of LNA is preferably R03M03GSB, and the change-over switch is single-pole double-throw switch (SPDT).
Preferably, the LoRa wireless communication chips model SX1278.
Preferably, the 2nd LoRa wireless communication module is LoRa chip, model SX1278.
Further embodiment is that the air quality acquisition sensor includes at least temperature sensor, humidity sensor, two
Aoxidize at least one of carbon sensor, formaldehyde sensor, PM2.5 sensor, TVOC sensor, certain those skilled in the art
Several air quality acquisition sensor can be added under the premise of not changing system structure, do not departing from the application principle
Under the premise of be also contemplated as falling in the application protection scope.
Further embodiment is, the system also includes display screen, the display screen is connected with cloud platform or monitoring terminal.
Display screen, which can amplify data, to be shown, human observer monitoring, research etc. are facilitated.The utility model can in real time to air quality into
Row monitoring, so that pollutant component variation tendency is prejudged, is referred to through the air, it is very convenient.
Compared with the relevant technologies, the utility model has the following beneficial effects:
(1) the utility model can monitor a variety of pollutants in air ingredients simultaneously, so as to reflect node well
The air quality of surrounding；
(2) communication mode between node and gateway is LoRa, and gateway and multiple nodes can be matched with ad hoc network without complexity
It sets；Long transmission distance can dispose meshed network in broad spectrum, while monitor the air quality in a wide range of space；It is anti-interference
Ability is strong, not will receive the interference of wireless signal common in environment；
(3) node ensures that data are not lost with the dual preservation data of server；
(4) Real-time Monitoring Data can be made full use of, is directly shown in large screen, and provide air matter according to parameters
Amount evaluation carries out early warning according to parameters variation tendency, analyzes reason；Number is checked for local and remote monitoring personnel
According to, and data can be stored for analysis；
(5) sensor of the utility model is often powered, and can monitor all data in real time.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the utility model embodiment 1；
Fig. 3 is the structural schematic diagram of the utility model embodiment 2；
Fig. 4 is that the air quality of the utility model embodiment 3 acquires sensor structure schematic diagram.
Specific embodiment
Below in conjunction with drawings and embodiments, the utility model is described in further detail.
Please refer to Fig. 1, a kind of indoor air quality monitoring system based on LoRa technology provided by the utility model, including
Air quality acquires sensor, further includes LoRa unit, cloud platform, monitoring terminal, wherein cloud platform, monitoring terminal pass through LoRa
Unit receives the data of air quality acquisition sensor acquisition and is shown to tester, while human observer can be by terminal to section
Point, gateway carry out serial ports parameter configuration (information such as channel, ID)；The air quality acquisition sensor integration is in LoRa unit
Interior, the LoRa unit is connected with cloud platform, monitoring terminal；The LoRa unit includes the LoRa node and LoRa interconnected
The signal of air quality acquisition sensor acquisition is sent to cloud platform, monitoring terminal by gateway；Wherein:
LoRa node includes microprocessor, A/D converting unit, the first LoRa wireless communication module, memory module, air matter
Amount acquisition sensor, the microprocessor are connected with A/D converting unit, LoRa wireless communication module, memory module, are storing
The information such as channel, the ID of node are stored in module；The air quality acquisition sensor is connected with A/D converting unit；It is described
A/D converting unit is converted into the analog signal of air quality acquisition sensor acquisition to be transferred to micro- place after corresponding digital signal
Device is managed, the digital signal that microprocessor is transmitted according to A/D converting unit generates corresponding air quality information and is stored in storage mould
In block, and air quality information is sent to LoRa gateway by the first LoRa wireless communication module；LoRa node and air matter
Amount acquisition sensor is set to region to be monitored jointly.
LoRa gateway includes microcontroller, the 2nd LoRa wireless communication module, the second wireless module, ethernet communication mould
Block；The microcontroller is connected with the 2nd LoRa wireless communication module, the second wireless module, ethernet communication module；Second
LoRa wireless communication module and the first LoRa wireless communication module communication connection receive the air mass signal of its transmission and transmission
To microcontroller, microcontroller by the second wireless module is sent to cloud platform after handling air mass signal, passes through ether
Net module is sent to monitoring terminal.
Embodiment 1
In the present embodiment, referring to figure 2., the LoRa node includes microprocessor, A/D converting unit, first
LoRa wireless communication module, memory module, air quality acquire sensor, the first wireless module；Wherein:
A/D converting unit passes after the analog signal of air quality acquisition sensor acquisition is converted into corresponding digital signal
It is defeated by microprocessor；Preferred herein, the microprocessor is MCU, model STM32F103RCT6.
Air quality data is carried out fusion treatment and forwarding by microprocessor, realizes parsing, the forwarding of access protocol, scheduling
And other resources are distributed, and with functions such as the network protocol stacks on basis；
Air quality information is sent to LoRa gateway by the first LoRa wireless communication module；
The data such as various network protocol stacks are stored in memory module, there are also the information such as the channel of memory node, ID, in net
When network is bad, storage acquisition data give LoRa gateway in covering data when waiting network good；It is preferred herein, memory module
For FLASH, model is preferably GD25Q64C.
First wireless module is one of 3G/4G/GPRS, with cloud platform communication connection.Wherein 3G module model is excellent
It is selected as EM560,4G module model is preferably USR-G402tf-mPCle, and GPRS module model is preferably AIR200；It is wireless simultaneously
Model EC20-CE-Mini PCIe chip also can be used in module, and 3G/4G/GPRS is integrated in a chip.It needs herein
It is noted that the above only preferred model of the application, naturally it is also possible to use other models, herein with no restriction.?
What needs to be explained here is that the above only preferred model of the application, naturally it is also possible to use other models, not limit herein
System.
The present embodiment may be implemented node and directly be communicated with cloud platform, can also supervise in real time when LoRa gateway exception
Survey air quality.
Embodiment 2
In the present embodiment, referring to figure 3., the first LoRa wireless communication module include LoRa wireless communication chips,
Power amplifier PA, low-noise amplifier LNA, change-over switch, antenna；The LoRa wireless communication chips and power amplifier
PA, low-noise amplifier LNA are connected, and the power amplifier PA, low-noise amplifier LNA are connected with change-over switch, and described turn
Switch is changed to be connected with antenna.Wherein, the LoRa wireless communication chips model SX1278, change-over switch are opened for single-pole double throw
It closes.
When sending signal, power amplifier PA is connected to by changer with antenna, and LoRa wireless communication chips are by data
Signal is by the way that in coded modulation to the frequency of setting, power amplifier PA amplifies signal, is subsequently transmitted to antenna, and antenna will be electric
Signal is converted to electromagnetic wave signal, and by this signal radiation into transmission medium, is sent to LoRa gateway, needs to illustrate herein
, the process of coding is specifically that forward error correction coding technology is used to be encoded.When receiving signal, change-over switch will be low
Noise amplifier LNA is connected to switch, and the wireless signal in transmission medium is converted to electric signal, low noise amplification by LoRa gateway
Device LNA carries out bandpass filtering to the phase after amplifying electric signal, is subsequently communicated to be demodulated in LoRa wireless communication chips, demodulate
Data afterwards are transferred to microprocessor.The change-over switch is single-pole double-throw switch (SPDT).
Noise jamming in channel can be greatly reduced in the present embodiment, to reduce the mistake generated in communication process.
Embodiment 3
In the present embodiment, the first LoRa wireless communication module includes LoRa wireless communication chips, power amplifier
PA, low-noise amplifier LNA, change-over switch, antenna；The LoRa wireless communication chips are put with power amplifier PA, low noise
Big device LNA is connected, and the power amplifier PA, low-noise amplifier LNA are connected with change-over switch, the change-over switch and antenna
It is connected.The change-over switch is single-pole double-throw switch (SPDT).
Referring to figure 4., the air quality acquisition sensor includes at least temperature sensor, humidity sensor, titanium dioxide
At least one of carbon sensor, formaldehyde sensor, PM2.5 sensor, TVOC sensor, certain those skilled in the art can be with
Several air quality acquisition sensor is added under the premise of not changing system structure, in the premise for not departing from the application principle
Under be also contemplated as falling in the application protection scope.
Embodiment 4
In the present embodiment, the first LoRa wireless communication module includes LoRa wireless communication chips, power amplifier
PA, low-noise amplifier LNA, change-over switch, antenna；The LoRa wireless communication chips are put with power amplifier PA, low noise
Big device LNA is connected, and the power amplifier PA, low-noise amplifier LNA are connected with change-over switch, the change-over switch and antenna
It is connected.The change-over switch is single-pole double-throw switch (SPDT).
The air quality acquisition sensor includes at least temperature sensor, humidity sensor, carbon dioxide sensor, first
At least one of aldehyde sensor, PM2.5 sensor, TVOC sensor.
The system also includes display screen, the display screen is connected with cloud platform or monitoring terminal.Display screen can be by number
It is shown according to amplification, facilitates human observer monitoring, research etc..The utility model can in real time be monitored air quality, thus logical
Pollutants in air composition transfer trend is crossed to be prejudged, referred to, it is very convenient.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other relevant technical fields, are also included in the patent protection scope of the utility model.
Claims (7)
1. a kind of indoor air quality monitoring system based on LoRa technology, including air quality acquire sensor, feature exists
In: it further include LoRa unit, cloud platform, monitoring terminal；The air quality acquisition sensor integration is described in LoRa unit
LoRa unit is connected with cloud platform, monitoring terminal；The LoRa unit includes the LoRa node and LoRa gateway interconnected,
The signal of air quality acquisition sensor acquisition is sent to cloud platform, monitoring terminal；Wherein:
LoRa node includes that microprocessor, A/D converting unit, the first LoRa wireless communication module, memory module, air quality are adopted
Collect sensor, the microprocessor is connected with A/D converting unit, LoRa wireless communication module, memory module, in storage module
In store channel, the id information of node；The air quality acquisition sensor is connected with A/D converting unit；The A/D conversion
Unit is converted into the analog signal of air quality acquisition sensor acquisition to be transferred to microprocessor after corresponding digital signal, micro-
Processor generates corresponding air quality information storage in a storage module according to the digital signal that A/D converting unit is transmitted, and
Air quality information is sent to LoRa gateway by the first LoRa wireless communication module；
LoRa gateway includes microcontroller, the 2nd LoRa wireless communication module, the second wireless module, ethernet communication module；Institute
Microcontroller is stated to be connected with the 2nd LoRa wireless communication module, the second wireless module, ethernet communication module；2nd LoRa without
Line communication module and the first LoRa wireless communication module communication connection receive the air mass signal of its transmission and are sent to micro-control
Device processed, microcontroller by the second wireless module are sent to cloud platform after handling air mass signal, pass through ethernet module
It is sent to monitoring terminal.
2. a kind of indoor air quality monitoring system based on LoRa technology as described in claim 1, it is characterised in that: described
LoRa node include microprocessor, A/D converting unit, the first LoRa wireless communication module, memory module, air quality acquisition
Sensor, the first wireless module；Wherein:
A/D converting unit is transferred to after the analog signal of air quality acquisition sensor acquisition is converted into corresponding digital signal
Microprocessor；
Air quality data is carried out fusion treatment and forwarding by microprocessor, is realized parsing, the forwarding of access protocol, is dispatched and divide
With resource, and with the network protocol stack function on basis；
Air quality information is sent to LoRa gateway by the first LoRa wireless communication module；
Network protocol stack data are stored in memory module, there are also the channels of memory node, id information to deposit when network is bad
Storage acquisition data give LoRa gateway in covering data when waiting network good；
First wireless module is one of 3G/4G/GPRS, with cloud platform communication connection.
3. a kind of indoor air quality monitoring system based on LoRa technology as claimed in claim 1 or 2, it is characterised in that:
The first LoRa wireless communication module includes LoRa wireless communication chips, power amplifier PA, low-noise amplifier LNA, turns
Change switch, antenna；The LoRa wireless communication chips are connected with power amplifier PA, low-noise amplifier LNA, and the power is put
Big device PA, low-noise amplifier LNA are connected with change-over switch, and the change-over switch is connected with antenna.
4. a kind of indoor air quality monitoring system based on LoRa technology as claimed in claim 3, it is characterised in that: described
LoRa wireless communication chips model SX1278.
5. a kind of indoor air quality monitoring system based on LoRa technology as claimed in claim 3, it is characterised in that: described
2nd LoRa wireless communication module is LoRa chip, model SX1278.
6. a kind of indoor air quality monitoring system based on LoRa technology as described in claim 1, it is characterised in that: described
Air quality acquire sensor include at least temperature sensor, humidity sensor, carbon dioxide sensor, formaldehyde sensor,
At least one of PM2.5 sensor, TVOC sensor.
7. a kind of indoor air quality monitoring system based on LoRa technology as described in claim 1, it is characterised in that: described
System further includes display screen, and the display screen is connected with cloud platform or monitoring terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821623076.XU CN209086223U (en) | 2018-10-08 | 2018-10-08 | A kind of indoor air quality monitoring system based on LoRa technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821623076.XU CN209086223U (en) | 2018-10-08 | 2018-10-08 | A kind of indoor air quality monitoring system based on LoRa technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209086223U true CN209086223U (en) | 2019-07-09 |
Family
ID=67118438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821623076.XU Expired - Fee Related CN209086223U (en) | 2018-10-08 | 2018-10-08 | A kind of indoor air quality monitoring system based on LoRa technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209086223U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567524A (en) * | 2019-09-10 | 2019-12-13 | 天津大学 | factory workshop air quality monitoring system based on LoRa spread spectrum technology |
| CN110969826A (en) * | 2019-12-18 | 2020-04-07 | 华南农业大学 | Orchard pipeline spraying pressure monitoring system and method based on LoRa |
| CN111457966A (en) * | 2020-05-21 | 2020-07-28 | 安徽炎黄科技环境安全工程有限公司 | Multidirectional air detection system for indoor air detection and detection method thereof |
| CN112013524A (en) * | 2020-05-27 | 2020-12-01 | 苏州新森智能科技有限公司 | Air collection sensor for fresh air |
-
2018
- 2018-10-08 CN CN201821623076.XU patent/CN209086223U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567524A (en) * | 2019-09-10 | 2019-12-13 | 天津大学 | factory workshop air quality monitoring system based on LoRa spread spectrum technology |
| CN110969826A (en) * | 2019-12-18 | 2020-04-07 | 华南农业大学 | Orchard pipeline spraying pressure monitoring system and method based on LoRa |
| CN111457966A (en) * | 2020-05-21 | 2020-07-28 | 安徽炎黄科技环境安全工程有限公司 | Multidirectional air detection system for indoor air detection and detection method thereof |
| CN112013524A (en) * | 2020-05-27 | 2020-12-01 | 苏州新森智能科技有限公司 | Air collection sensor for fresh air |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209086223U (en) | A kind of indoor air quality monitoring system based on LoRa technology | |
| Wu et al. | Sewage information monitoring system based on wireless sensor | |
| CN202309772U (en) | Zigbee-based aquiculture-environment movable-type positioning and monitoring system | |
| CN101730301A (en) | Wireless sensor network and sensor network-based water quality monitoring system | |
| CN201623860U (en) | Wireless sensor network and water quality monitoring system based on sensor network | |
| CN104185307A (en) | Agricultural-greenhouse-oriented integrated WSN intelligent sensor uniform interface system | |
| CN104767791A (en) | Agricultural product storage and transportation control system based on wireless sensor network | |
| CN110913359A (en) | Multi-fusion agricultural environment online monitoring system based on LoRa technology and WiFi technology | |
| CN102387185B (en) | Double-frequency-band communication device for indoor light sensor wireless network | |
| CN101335670A (en) | Wireless sensor network warehouse monitoring system and method on basis of ZigBee | |
| CN106991780A (en) | A kind of lora networking smog warning systems and alarm method | |
| CN109831495A (en) | A kind of intelligent radio methane monitoring device, system and method based on NB-IoT | |
| CN104569311A (en) | Novel hierarchical heterogeneous cross-network air quality real-time monitoring model | |
| Qiuchan et al. | The water quality online monitoring system based on wireless sensor network | |
| CN204461485U (en) | A kind of air quality detection system based on Internet of Things | |
| CN101415192A (en) | Remote intelligent real time monitoring system for TD-SCDMA/GSM/CDMA synthesis network quality | |
| CN106791258A (en) | LoRa image acquisition transmission systems | |
| CN206331579U (en) | LoRa universal nodes | |
| CN201589614U (en) | Multiple-carrier channel accessed wireless communication network hydrographic multiparameter metering instrument | |
| CN103412867A (en) | Filtering device and filtering algorithm based on 3-sigma rule | |
| CN202904325U (en) | Electric energy consumption data remote-monitoring matching device | |
| CN202856998U (en) | Wireless illumination photometer | |
| CN204809986U (en) | Transmission line patrols and examines management system based on GPRS wireless transmission | |
| CN111323800A (en) | Intelligent container house GPS system based on NB-IOT and control method thereof | |
| CN207752324U (en) | A kind of long range Agricultural Information acquisition gateway system based on LoRa |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190709 Termination date: 20201008 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |